Spindle lift stop



T, J. RISK March l0, 1931.

SPINDLE LIFT STOP Filed MaICh l1, 1950 INVENTOR.

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Patented Mar. 10, 1931 UNITED 'STATES PATENT OFFICE THOMAS J'. RISK, OF PAWTUCKET, RHODE ISLAND, ASSIGNOR TO EASTON AND BURN- HAM MACHINE COMPANY, OF IAVITUCKET, RHODE ISLAND, A CORPORATION OF RHODE ISLAND SPINDLE LIFT STOP Application filed. March 11,

rllhis invention relates to an improved spindleV construction for spinning' frames; and has for its object to provide simple retaining means for preventing` inadvertent removal of the spindle while doiing and yet provide simple and effective means in said retaining means whereby the spindle may be readily released to be removed for oiling, inspection or repairs when desired.

A further object of the invention is to provide a stop member having a portion overhanging the flange of the spindle, the stop having -a shank portion which is hingedly connected to the oase portion, the shank carrying a locking member for releasably retaining the stop in working position and adapted to be readily released to move the stop from vertical alignment with the flange. i i" A fur-ther object of the invention is to form the stop member with a shank portion threaded at one end to be screwed into the base and offset at its other end to overhang the spindle flange, the shank being formed r in two parts pivotally connected together, and

to provide a lock ring which when moved over the joint retains the shank parts in alignment and when moved from position over the joint permits the overhanging end portion to swing back out of vertical alignment with the flange.

Vfth these and other objects in view, the invention consists of certain nov-el features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings: y

Fig. 1 is a side elevation partly in section showing a spindle with my improved lift stop in operating position thereon to prevent the removal of the spindle.

Fig. 2 is a sectional view showing the lift stop as swung back out of operating position to permit of free lifting of the spindle from its base.

Fig. 3 is an enlarged view showing Ithe shank of the stop member as having a portion milled out of one side thereof, and threaded at its lower end and offset at its upper end.

Fig. l shows the shank portion of the stop 1930. Serial No. 434,924.

Fig. 6 is a perspective view showing a por- L tion of the lock ring removed.

It is found in the practical operation of spindles for spinning machines, of advantage to provid-e means whereby the spindle may be retained in operative lposition during the doling operations and to so form theretaining means that it may be readily removed from operating position. to permit of ready removal of the spindle when desired; and to accomplish this in a simple and effective way, I have formed a lift stop member with a shank portion hinged to the base member of the spindle and offset at its upper end to overhang the flange of the spindle, whereby this overhanging portion of the stop may be readily swung back to release the spindle, when desired. My improved construction of stop is extremely simple and inexpensive to manufacture and is very effective'in its operation, as when it is desired to remove the spindle, it is only necessary to lift the stop ring above the joint portion of the shank, and swing the overhanging part of the stop bodily outwardly to completely release the spindle blade to be freely removed from its base; and the following is a detailed descriptionof the present` embodiment yof my invention and showing the preferred form of stop device by which these advantageous results may be accomplished.

`With reference to the drawings, 10 designates the spindleiblade which is rotatably supported in its base 11. 0n this blade is fixed a whirl 12 having a laterally extending flange 13 about its lower edge. This base is provided with a laterally extending portion 14: which is tapped at 15 to receive the threaded end of my improved lift stop member 16. The preferred form of lift stop, which is herein shown, is constructed from a length of round wire having a shank portion 17, the lower end of which is threaded as at 18 to be screwed intofthreaded boss of the said threaded base, the upper end of the shank being bent laterally into substantially hook shape as at 19, the hook-shaped extremity of which is arranged to lie in a plane to overhang the flange 13 of the spindle part. I then mill into one side of the shank portion as at 21, in Fig. 3, and drill the same as at 22 and then sever the shank as at 23. These severed parts are then turned side for side into the position illustrated in Fig. Ll, and set together to overlap each other and connected by a pivot pin 2.4-, the opposite ends of which may be upset or otherwise secured in position.

The end extremities of these milled sections are preferably rounded as at 25, to permit of the overhanging part 19 being swung back relative to the threaded part. I now insert this shank portion through the center opening 26 of the lock ring 27, and then screw the threaded end 18 into the tapped hole 15 in the base,` bringing the offset part 19 into position to overhang the flange 18, by drop ping the lock ring 27 to slide over the joint and rest against the base, the ring is caused to embrace the pivoted portion of the shank and so lock this overhangin g part securely in position over the flange, and when it is desired to remove the spindle, it is only n ecessary to lift the ring into the posi Eon shown in Fig. 2, to the upper portion of the shank, which releases the pivoted portion and permits the offset part to be swung back out of alignment with the lifting movement of the spindle.

My improved device is very simple and inexpensive in construction and is very effective in its operation and by its use the spindle blade including its whirl, may be locked securely in its operative position and then readily released to be removed from such position, when desired.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only bythe terms of the appended claims.

I claim:

1. In a spindle lift stop, the combination of a base, a spindle removably supported on the base, a ange on one of the spindle parts, a stop member having a shank portion supported on said base and formed in two parts hinged together, one of said parts normally overhanging said flange, and a lock ring slidable on said .shank to lock the hinge and to be moved to release the hinge to swing the overhanging part from alignment with the flange.

2. In combination, a base, a spindle removably supported on the base and having a flange, a stop member on said base having` a shank portion formed in two parts hingedly connected together, and a stop portion normally overhanging said spindle flange when the two shank parts are in alignment, and

means for releasably locking the two shank parts in alignment.

3. In combination, a base, a spindle removably supported onthe base and having a flange, a stop member on said base having a shank portion formed in two parts hingedly connected together, and a stop portion normally overhanging said spindle flange when the two shank parts are in alignment, and means slidably mounted on said shank por tion for releasably locking the two shank parts in alignment.

1. In combination, a base, a spindle removably supported on the base and having a flange, a stop member on said base having a shank portion formed in two parts hingedly connected together, and a stop portion normally overhanging said spindle flange when the two shank parts are in alignment, and a tubular member slidably mounted on said shank portion for releasably locking the two shank parts in alignment.

5. A spindle lift stop comprising a stop portion and a shank portion formed in two partshingedly connected together, and a tubular member slidably mounted on the shank portion.

6. A spindle lift stop comprising a stop portion and a shank portion formed in two parts hingedly connected together, and a tubular member slidably mounted on the shank portion, the end of the shank portion being threaded.

In testimony whereof I afHx my signature.

THOMAS J. RISK. 

